Securing means for digester and retort doors.



P. F. DUNDON.

SECURING MEANS FOR DIGES TER AND RETORT DOORS.

} APPLICATION FILED 061231, 1916.

1 w- 11.416, Pamdj May 21, 1918.

WITNESSES: INVENTOR A moxunxs I 'NTEM @TATFd F nnrr r inn.

SECURING MEANS) FOR DIGESTER AND RETORT DOORS.

Specification of Letters Patent.

Patented May21, 1915..

Application filed October 31, 1916. Serial No. 128,800.

To all whom it may concern:

Be it known that I, PATRICK F. DUNDoN,

lowing is a specification.

My invention relates to doors for hermetically sealingretorts, digesters, or other vessels which sustain internal pressure, and especially consists in means for hinging, closing and sealing suchdoors.

, Referring to the accompanying drawings for a more complete explanation of my invention- Figure 1 is an end View of a retort and door, showing my invention. i

Fig. 2-is a horizontal section on line 2-2 of Fig. 1. y i y y Fig. 3 is a section on line 3-3 of Fig. 1..

,Figs. 41 and 5 are detail views of the device. i i

As shown in the drawings,A is the retort or vessel to be closed, which may be of any suitable or desired form. A heavy metal frame 2 surrounds andforms the end of the retort, and upon this frame the door 3 is suspended and secured as follows: The door is of .curved or dished form to give it strengthand is reinforced by ribs 4, on the inside, as plainly shown in Fig. 2. The pressure bars 5 are of a deep section, curved at one end to fit between lugs 7 on the door frame, these lugs forming hinges by which the door is supported and upon which it swings when opened or closed.

"The door 3 closes upon an elastic gasket 9 which can be inserted in a groove either in the door "or the frame, and is pressed in wardly by the bars 5 and cams 19, as shown in Fig. 2. The bars 5 are carried upon the door by means ofhousings 11 which are fixed to the door and fit looselyover the enlargements 12 of the bars. Screws 13 pass through these enlargements or bosses and through the transverse portion of the housings 11, and by turning these screws, after the door has been closed, the pressure is exertedto retain "them in their closed position.

The bars 5 are hinged to the fixed lugs 7 by means of bolts '21 and as the door is carried by the bars 5 and the housings 11, through whichsaid bars pass, it will be obt5 vious that the release of the bars 5' so that they may swing about the hinge pins will allow the door to be opened, when desired.

The door has upon each side projecting lugs 5 contiguous to the bars, and upon the hinge pin or bolt 21 is carried a locking clutch 15, which is adapted to swing upon the bolt 21 in unison with the movement of the door about its hinge. The movement of this locking device is effected by means of a lug 01' pin 16 which projects from the side of the bar and engages the top of the clutch 15, thus closing it down against the outer surface of the door and causing it to hook over the projecting lugs 5 forcing this portion of the door down against the packing gasket 9. At the opposite end the bars 5 are made straight and plain and these bars are engaged by means of a forked end link 17, which is adapted to swing over the end of bar 5. This brace is hinged, as shown at 17, and is turnable about itshinge pin, as shown in dotted lines in Fig. 2, and between the jaws of the link above the bar 5 and the eccentric cam by which the door is locked in place. When thus swung into position over the ends of the bars 5 it will at the same time engage the locking device 15" and will turn it down over the lug 5 upon that edge of the door; this action being efiected by means of the lug or pin 16% carried by the link or brace 17, so that when the link or brace 17 is turned to engage the bar 5, this pin will simultaneously turn the locking device 15* down against the edge of the door and into engagement with the lug 5 at that point.

In order to lock and firmly hold the links or braces 17 with the bar 5, I have shown cams 19 pivoted at the ends of links 17, which links are pivoted and turnable about the pins 18. The cams have levers 22 by which they are turnable, and they have the pins on which they turn eccentric to the periphery and a flat surface 10 so that when turned to bring this surface into engagement with the upper edges of the bars 5, this flat surface will prevent the cam from turning accidentally, and avoid the possibility of the door being blown open by pressure from .the interior of the retort. If, by any chance, the lugs might become disengaged, the safety catches 15 and 15 will prevent the door from being blown open by reason of the dovetailed engagement of these catches with the lugs 5 upon the door.

J ustbelow the door on the frame are two ledges or supports 23, upon which the door is supported to prevent any possibilityof its.

falling fromits place, if released from. its supporting arms.

zontal position, it will be seen that there may be a tendency, by reason of the weight,

the lugs 5 of the door, and the rear pOItiOli' of the door will thus be automatically locked.

At the opposite end the lugs 116 carried upon the links 17, will e1igagetl1e latches 15*, when the links are swung, so that the yoke portion passes over the ends of the bars 5,

thus latching this portion, and when the engage the end of the bar 5, the whole device willeccentric lock 19 .is turned so as to,

be securely locked and the door hermetically sealed.

In order to open the door it will be necessary to first turn the eccentric by means: of its lever 22, or an equivalent thereof, thus releasing the pressure upon the bar and allowing the door 'to move sufliciently to allow the internal pressure to escape, the door being meantime securely held in pla'ce by the hook latches 15-15. This internal pressure having been released, the door may then be opened by first swinging thelinks 17 out of engagement with the hooked latches 15 and then swinging the bars which carry the door about its hinges, when the hooks upon the rear edge of the door will be automatically swung back by the movement of the bars 5.

The door, is steadied and lost motion and sagging of, by reasonof the loose support of the door upon the bars 5, are prevented by an auxiliary hin e and adjacent brace hinge link 24, one en "of which is attachedto a lug 25 fixed to theupper part of the'door, and the other end is fulcrumed and turn-f able upon a hinge pin 26 on the door frame and in line with the pin 21; e f

Theforked brace having its" fulcrum eon centric with the other hinge-f pins on the frame acts as an auxiliary hinge, while the other end of it passes through the lug 25 on the dooranjd has a-threaded end and nut 27 bywhich the" door can be at all.;timeskept in adjustment. j f

Having thus, described my invention, what I claimand desire to secure by Letters Patent is x 1 The'combina-tion with aretort and the As the bars 5 extend across the door witlrtheir wide s des 1n hor1- closing door thereof, of bars hinged to the retort. front, housmgs upon the door through the bar ends near the hinges, lugs fixed to the contiguous edges ofthe door, and hook shaped safety latches adapted to be engaged by-thepinsof the bars to close and lock the latches in engagement with said lugs.

2.A retort and like chamber having a door frame and a door hermetically closable against the frame, housings upon the door front, bars extending loosely through said housings and having their rear ends hingedto the door frame and hinge pins about which the bars are turnable to open or close the door, lugs on the door, safety latches turn-able upon the hinge pins of the bars and actuated by the movement of the bars to engage the lugs, other latches turnable on hinge pins near the opposite edge of the door,links turnable upon the hinge pins of the last named latches, said links having forks adapted'to engage the outer movable ends of the bars, and pins projecting from said links acting to close the latches to engage the door lugs when the links are engaged with the bars.

,3. ,A retort and like chamber, havin a hermetically closing door, bars extending transversely across the door having one end hinged to the door frame, housings upon the door through which the bars extend to Support and carry the door, locking latches, one member of which projects from the edge of the 'door and the other member being hinged coincidently with thebar', and pins carried by the bars adapted to engage the hinge member of the locking clutch and automatically close-it with the closing of the'door.

4t. Aretort and frame'anda door closable over the retort opening andhaving housings upon its outer face, wide rectangular bars extending loosely through the housings and having one end hinged to the retort frame, links pivoted to the opposite side of the frame and adapted to swing over and inclose the outer ends of the'bars and prevent sagging and twisting, supplemental catches hinged to thecontiguous edges of the retort frame, co-acti-ng lugs upon the edge'of the door, and means carried by the links to engage and lock the latches simultaneously with the engagementofthe links,

5. A retort and like chamber havinga door frame and I a door closable thereon, channeled housings upon the outer face of the door,-bars extending loosely through the housings, having one end hinged .to the door frame and turnable to open or close thcdoor, lugs fixed to the edges of the dooreontiguous to the/bars, and safetylatchcs hinged axially with the bars at one-end and with swinging linksat the othernendnto engage the lugs :and hermeticallyi closel the door.

6, In a retort, a'doorframe,-a doorhinged which said bars extend, pins projecting from for closing thereon, means for locking the door closed, and safety locking means movable to operative position by said first means and operable for holding the door in a partially opened position when said door is released by said first means.

7. In a retort, a door frame, a door hinged for closing thereon, means for locking the door closed, and safety locking means for holding the door from blowing completely open when released by said first means, said safety locking means movable independently of the first means but engageable thereby for movement therewith to an operative position on closing and locking of the door.

8. In a retort, a door frame, a door hinged for closing thereon, pivoted means on opposite sidesof the door for locking the same closed, safety locking means operable for holding the door in a partially opened position when released by said first means, and means carried by the pivoted means for moving the safety locking means to operative position.

9. In a retort, a door frame, a door th for, hinge knuckles on the frame, door locking means carried by the door for supporting the latter from the knuckles, a hinge pin connecting the means to the knuckles, and a safety catch also connected to the hinge knuckles by the hinge pin for engaging the door to hold the'latter from blowing open when released by said first means.

10. In a retort, a door frame, a door therefor, hinge knuckles on the frame, means carried by the door for supporting the latter from the knuckles, a hinge pin connecting the means to the knuckles, a safety catch also connected to the hinge knuckles by the hinge pin for engaging the door, and means between the safety catch and said first means for effecting movement of the catch to operative position on closing movement of the door.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

PATRICK F. DUNDON.

Witnesses:

W. A. DOYLE, WM. E. EASTMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

